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Powered Reference Monitors Offer Unparalleled Sound, Versatility and Affordability

PRO-QUALITY MONITORING FOR ANY STUDIO OR WORKSPACE


Get legendary JBL performance in your studio with the next-generation JBL 3 Series, compact powered studio monitors. Integrating the revolutionary JBL Image Control Waveguide, 3 Series MkII monitors offer stunning detail, precise imaging, a wide sweet spot and impressive dynamic range that’s unheard of in their class. With JBL’s patented Slip Stream™ Port and 200w of power, the LSR310S subwoofer adds deep, accurate bass to your monitoring system. Whether you’re working in stereo, 2.1, or beyond—the 3 Series family will enhance the critical listening capabilities of any production space—and deliver an enjoyable mix experience at an accessible price.

What’s New in 3 Series MkII?

MAKE YOUR MARK WITH SUPERIOR STUDIO MONITORS


Since their release, word has spread on the quality and value found in the original JBL 3 Series, resulting in wide adoption from hobbyists to high-end professionals working in music, film, post, and broadcast production worldwide. With such an obvious hit, you might ask, "Why update now?" On every JBL project, there’s always a handful of features or improvements that the engineering team can’t squeeze in before going to production, and 3 Series was no different. When the opportunity presented itself, we decided to make those final improvements to the transducers, add a frequently-requested feature, and apply the latest manufacturing learnings. The result—new editions of these popular studio monitors that retain the best qualities of the originals, but now look better, sound better, and provide transparent sound in even more production environments. 

 

  • Next-generation JBL transducers for optimized transient response and improved linearity
  • Sleek, modern design provides a dramatic flair to any studio
  • New Boundary EQ delivers better bass performance when monitors are placed close to walls or corners

 

 

Image Control Waveguide

PRECISE DETAIL AND A BIGGER SWEET SPOT


Reveal impressive detail, ambience and depth in your mixes thanks to the groundbreaking JBL Image Control Waveguide. Originally developed for our flagship M2 Master Reference Monitor, this patented innovation ensures an acoustically seamless transition between the low- and high-frequency transducers and provides an immersive soundstage with precise imaging. Offering a broad sweet spot and neutral frequency response, 3 Series monitors deliver a crystal-clear representation of your mix—revealing subtle details, even when listening off-axis. 

 

  • Detailed imaging and a broad, room-friendly sweet spot
  • Neutral in-room response for better accuracy
  • Same patented design as used on the M2 Master Reference Monitor

 

 

Next-Generation Transducers

ENHANCED MIXING ACCURACY


To help you make the best mix decisions, we equipped all the monitors in this series with acclaimed 3 Series transducers that now perform even better. Hear deep, accurate and tightly controlled bass thanks to a long-throw woofer and the patented JBL Slip Stream™ low-frequency port. Enjoy soaring, immaculately detailed highs via the woven-composite 1" Neodymium tweeter. JBL engineers took things to the next level with faster HF transient response through fine-tuned ferrofluid damping, and greater low-frequency linearity and lower harmonic distortion, courtesy of an enhanced woofer design. The result is a studio monitor you can trust—with unmatched peak handling, stunning dynamics and neutral frequency response that’s unbeatable in its class.

 

  • Three different sizes available: 305P MkII (5"), 306P MkII (6.5") and 308P MkII (8")
  • Next-generation JBL transducers for optimized transient response and improved linearity
  • Patented Slip Stream™ low-frequency port and long-throw woofers provide superior bass performance
  • Woven-composite 1" Neodymium tweeter for detailed and accurate highs

 

Powerful Amplification

BIG SOUND OUT OF THE BOX


JBL 3 Series monitors are ready for the most demanding production styles right out of the box. Dual integrated Class D power amplifiers, which we custom designed for each transducer, give you generous dynamic range for any project. From music production and podcasting to cinematic sound design or daily vlogging, enjoy the output and power you need to hear exceptional detail at any volume-even at peak SPLs. Simply plug in, power on, and start creating. 

 

  • Dual integrated, custom Class D amplifiers
  • Superior dynamic range
  • Reduced distortion and extended frequency response

 

Customized Response

TAILORED SOUND TO FIT YOUR STUDIO


The dimensions and acoustics of a room can have a major effect on sonic accuracy, and that’s why the JBL 3 Series family lets you adjust the response to fit your studio. The new Boundary EQ attenuates the low-end boost that can occur when you place monitors directly on the desktop or near walls. The 3-position HF Trim switch allows you to adjust the high-frequency response of the monitors to tailor them to room acoustics or personal tastes. 

 

  • Customize monitor response to fit your workspace
  • Boundary EQ compensates for low-frequency variants introduced by the environment
  • HF Trim switch adjusts high-frequency output to room acoustics or personal preferences
  • Flexible Connectivity for Your Studio
  • PROFESSIONAL FORMATS FOR EASY INTEGRATION
  • Offering both balanced XLR and 1/4" TRS inputs, and adjustable +4dBu/-10dBV input sensitivity, monitors in the 3 Series family offer flexible, professional connectivity options that provide easy setup while maintaining your signal integrity.
  • Compatible with professional connectivity formats
  • Balanced XLR inputs and 1/4" TRS inputs
  • Switchable between +4dBu and -10dBV input sensitivity

 

SPECIFICATIONS ^  
  LF DRIVER SIZE 203mm (5")
  HF DRIVER SIZE 25mm (1")
  HF DRIVER TYPE Soft dome
  CROSSOVER 1725Hz 4th order acoustic Linkwitz-Riley
  OK FOR USE NEAR MAGNETICALLY SENSITIVE EQUIPMENT Yes
  INPUT SENSITIVITY
(-10dBV INPUT)
92dB / 1m
  POWER CONFIGURATION Bi-amplified
  HF DRIVER POWER AMP 41W, Class-D
  LF DRIVER POWER AMP 41W, Class-D
  FREQUENCY RESPONSE (±3dB) 49Hz – 20kHz
  FREQUENCY RANGE (-10dB) 43Hz – 24kHz
  LOW FREQUENCY EXTENSION (-10dB) 43Hz
  MAXIMUM CONTINUOUS SPL 94dB
  MAXIMUM PEAK SPL 108dB
  MAXIMUM PEAK INPUT LEVEL
(-10dBV / +4dBu)
+6dBV / +20.3dBu
  SYSTEM DISTORTION CRITERIA <10% THD at maximum output with full compressor / limiter engagement
  ELECTRICAL DISTORTION CRITERIA 0.2% THD @ 1kHz / 2.83VRMS output; <1% THD @ 1kHz, full rated output
  SIGNAL TO NOISE RATIO 75dBA (A-Weighted), 70dBr (unweighted), relative to 2.83VRMS output
  COVERAGE 
HORIZONTAL x VERTICAL
120° x 90°
  ANALOG INPUT TYPES 1 x XLR female, 1 x TRS female, balanced
  HF TRIM CONTROL -2dB, 0dB, +2dB
  BOUNDARY EQ LF Shelf @ 50Hz: -3dB, -1.5dB, 0dB
  AC INPUT VOLTAGE 100 – 240VAC (±10%), 50 / 60Hz
  ENCLOSURE TYPE Ported
  ENCLOSURE CONSTRUCTION 15mm MDF
  ENCLOSURE FINISH Matte black PVC
  BAFFLE CONSTRUCTION Injection-molded structural ABS
  CABINET DIMENSIONS 
(H x W x D)
298 x 185 x 231mm (11.7" x 7.3" x 9.1")
  DISPLAY CARTON (H x W x D) 354 x 244 x 299mm (13.9" x 9.6" x 11.8")
  SHIPPING CARTON (H x W x D) 373 x 260 x 315mm (14.7" x 10.2" x 12.4")
  NET WEIGHT 4.73 kg (10.43 lbs)
  SHIPPING GROSS WEIGHT 5.72 kg (12.61 lbs)

 

 

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